Bromine vs Iodine
Pick up to 3 elements and see how they stack up.
| Property | Bromine | Iodine |
|---|---|---|
| Atomic number | 35 | 53 |
| Atomic mass | 79.904 | 126.9 |
| Electronegativity | 2.96 | 2.66 |
| Melting point | 265.8 K (-7.3 °C) | 386.85 K (113.7 °C) |
| Boiling point | 332 K (58.9 °C) | 457.4 K (184.2 °C) |
| Density | 3.103 g/cm³ | 4.933 g/cm³ |
| Atomic radius | 183 pm | 198 pm |
| Ionization energy | 11.814 eV | 10.451 eV |
| Discovered | 1826 | 1811 |
| Category | Halogen | Halogen |
| State at room temp. | Liquid | Solid |
| Block | p | p |
| Group | 17 | 17 |
| Period | 4 | 5 |
| Valence electrons | 7 | 7 |
| Common charges | −1 | −1 |
| Electron configuration | [Ar] 3d10 4s2 4p5 | [Kr] 4d10 5s2 5p5 |